Thomas e



(No Model.)

T. B. ALMOND.

ROTARY ENGINE.

No. 428,740. Patented May 27, 1890.

' ATTORNEYS.

UNITED v STATES PATENT OFFICE.

THOMAS R. ALMOND, OF NEWV YORK, N. Y.

ROTARY ENGINE.

SPECIFICATION forming part of Letters Patent No. 428,740, dated May 2'7,1890.

Application filed February 15, 1890. Serial No. 340,503- (No model.)

To all whom it may concern.-

Be it known that I, THOMAS R. ALMOND, a resident of the city of NewYork, in the county and State of New York, have invented an Improvementin Rotary Engines, of which the following is a specification.

This invention relates to certain improvements on the rotary enginepatented to me on the 7th day of January, 1890, by Letters Patent No.418,665; also on the rotary engine described in an application filed byme on the 15th day of June, 1889, Serial No. 314,411.

The invention mainly consists, first, in dividing the ring thatsurrounds the eccentric within the steam-chamber into two or moresections and combining these sections with interposed packing, therebydispensing with an adjustable end plate in the steam-chamber. It alsoconsists in combining the lubrieating-boxes, placed over the main shaftat opposite sides of the cylinder, with a connecting supply-pipe andwith an oil-reservoir placed upon said supply-pipe, and with a cock, allas hereinafter more fully described.

In the drawings, Figure 1 is a vertical central section of my improvedrotary engine. Fig. 2 is a face view of the packing E between thesections a b of the ring D. Fig. 3 is a detail section on the line a c,Fig. 2, of the said packing and the adjoining sections of the ring.

In the accompanying drawings, the letter-A represents the main shaft; B,the steam-cylinder; O, the eccentric, and D the ring around theeccentric, all arranged substantially as described in my aforesaidLetters Patentthat is to say, so that the ring D can be balanced bysteam admitted between it and the eccentric C.

In my aforesaid Letters Patent No. 418,665 I showed, in addition tothese parts, an adjustable end plate within the cylinder and means formoving the same toward one end of the ring D, so as to make a tightjoint. Instead of this adj ustable' end plate, I now divide the ring Dinto two or more sections a b, and interpose between every two adjoiningsections elastic packing E. This packing may be of suitable elasticmaterial, and will tend to spread the sections a b apart and hold themin fair and proper contact with the cy1inderheads, at the same timekeeping the joint between the sections a b sufficiently tight, therebyrendering the adjustable end plate or head of the cylinder unnecessary,although the same may still be used.

F F are boxes placed over the shaft A at opposite sides of the cylinderB and contain ing lubricating and absorbent material. These boxes areunited by a pipe G, as shown, said pipe communicating with the reservoirH, to a cock I. When this cock is open, as in Fig. 1, the oil or otherlubricating matter in the vessel H flows through the pipes G into theboxes F F, and thus keeps the same supplied with the proper lubricatingmatter. At the same time these boxes F F are by minute channels in steamcommunication with the interior of the cylinder B, so that thesteampressure within the cylinder B will to some extent be exerted uponthe matter in the boxes F F, thereby retarding the flow of thelubricant. At the outer end each of the boxes F is hermetically sealedby a gland d or analogous means. The inner end of each box is in contactwith a ring J, which is pressed by springs e 6 against the box F, saidsprings bearing also against the eccentric O or any analogous projectionon the shaft A. The ring J revolves with the shaft and eccentric, and isplaced in this position for the purpose of reducing the size of thecommunicating passage between the steam-cylinder and thelubricating-boxes to a substantial minimum, thereby serving to furtherretard the flow of the lubricating matter along the shaft toward theeccentric and to prevent an unduly large column of steam passing fromthe steam-cyl inder B to the lubricating-box F.

Having now described my invention, what I claim is 1. In a rotaryengine, the combination of the shaft A and its eccentric O andsteamcylinder B with the ring D, placed around said eccentric, said ringbeing made in sections at b, and with the elastic packing E, placedbetween the adjoining sections of said ring, substantially as hereinshown and described.

2. The combination of the steam-cylinder B, eccentric O, ring D, andmain shaft A of a rotary engine with the two lubricating-boxes F F, bothconnnnnicating with the steam- V interposed between the inner ends ofthe Ineylinder 3 and with the pipe G, reservoir TI,

bricating-boxes F, and the eccentric C, suband cock I, as described.

3. The combination of the steam-cylinder 5 B, eccentric C,ring' D,:u1dmain shaft A of a I Witnesses:

rotary engine with the lnbricatingboxes F F, and with the rotatingspring-prcssed rings I stantially as herein shown and described.

THOMAS R. ALMOND.

HARRY M. TURK, HARRY E. EVERDING.

